1881281015 has 8 divisors (see below), whose sum is σ = 2258706048. Its totient is φ = 1504245600.

The previous prime is 1881280993. The next prime is 1881281027. The reversal of 1881281015 is 5101821881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1881281015 - 2¹⁰ = 1881279991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86672 + ... + 106181.

It is an arithmetic number, because the mean of its divisors is an integer number (282338256).

Almost surely, 2^1881281015 is an apocalyptic number.

1881281015 is a deficient number, since it is larger than the sum of its proper divisors (377425033).

1881281015 is a wasteful number, since it uses less digits than its factorization.

1881281015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194809.

The product of its (nonzero) digits is 5120, while the sum is 35.

The square root of 1881281015 is about 43373.7364657462. The cubic root of 1881281015 is about 1234.4814194123.

The spelling of 1881281015 in words is "one billion, eight hundred eighty-one million, two hundred eighty-one thousand, fifteen".